O’Hare is Chicago’s biggest CO2 emitter; Indiana factories are region’s top polluters
- Posted on February 9, 2025
- By Chicago Tribune
- 3 Views
![](https://www.chicagotribune.com/wp-content/uploads/2025/01/ctc-l-CO2-Lippert029_218509738_10bf18.jpg?w=640)
O’Hare is Chicago’s biggest CO2 emitter; Indiana factories are region’s top polluters
![](https://www.chicagotribune.com/wp-content/uploads/2025/01/ctc-l-CO2-Lippert029_218509738_10bf18.jpg?w=640)
New database aims to help cities map out their own CO2 cuts as President Trump looks to eliminate federal programs.